There are two versions of hex for Mac, depending on whether you have an Intel Mac (mostly pre-2020) or Apple Silicone Mac (mostly post-2020).

The first time you open hex, it will tell you that it can't open the app because it's from an unidentified developer (that's because I'd have to pay to be an identified one). You can override this by either right-clicking on the app after installing it and clicking open or by trying to open the app and then going to the Apple menu  → System Settings, click Privacy & Security in the sidebar, then go to Security and go to the bottom to find the Open button. More information here.

Based on a not-particularly-reliable test, you seem to be using an Apple Silicone Mac, in which case the arm64 version is optimised for your system.

Based on your browser, you might be using an Intel Mac. However, its not always possible to detect this. If you think you might have an Apple Silicon Mac, click on the  in the top left-hand corner and select ‘About this Mac’. If the Processor name is not Intel and starts with an M, you are using an Apple Silicone Mac and should download the arm64 version, which is optimised for your system.

Downloads

• Stable release for Intel Mac (hex-3.4.4.dmg)
• Stable release for Apple Silicone Mac (hex-3.4.4-arm64.dmg).

There are three ways to install the application on Linux, though I have not yet been able to test any of these. Please feel to provide feedback on Github.

• Stable release for Debian/Ubuntu (hex_3.4.4_arm64.deb)
• Stable release for CentOS, RHEL and Fedora (hex-3.4.4.aarch64.rpm)
• Stable release for all Linux distros (hex-3.4.4-arm64.AppImage)